3 in 1 LCD Mobile Battery Tester Power Detector Voltage Current Meter USB Charger Doctor 30% off Bank Tester Meter VoltmeterIt measures the current and voltage of the power supply unit with a USB port.Plug and play, no extra power required.The voltage and current will show a circle.Small size, simple and easy to carry. Product specifications: Possible range: 3.5 - 7.0V, 0 - 3A.Resolution: The voltage is 10mV and the current is 10mA.Error range: voltage <±1%, current <±2%.Full-scale voltage drop: 200mV.Operating temperature: 0 - 60 ° C.Color: transparent, blue
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